The two-phase, air-water flow pattern in a DynaWhirlpool type centrifugal separator is investigated using time-dependent, three-dimensional numerical simulation. The air-water interface is captured by the Volume-Of-Fluid approach, while the unresolved turbulence fluctuations are modeled via a second-order differential-stress turbulence model. The methodology is validated with available laser-Doppler data acquired on a similar separation device. The velocity field within the cyclone is thoroughly characterized for a single operating condition, revealing the presence of a stable air core that flows axially faster than the surrounding water.



Titolo: Two-phase flow field in a cylindrical hydrocyclone with tangential discharge
Autori: 
PILLER, MARZIO
SCHENA, GIANNI
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Data di pubblicazione: 2017
Stato di pubblicazione: Pubblicato
Rivista: 
FLUID MECHANICS RESEARCH  
Abstract: The two-phase, air-water flow pattern in a DynaWhirlpool type centrifugal separator is investigated using time-dependent, three-dimensional numerical simulation. The air-water interface is captured by the Volume-Of-Fluid approach, while the unresolved turbulence fluctuations are modeled via a second-order differential-stress turbulence model. The methodology is validated with available laser-Doppler data acquired on a similar separation device. The velocity field within the cyclone is thoroughly characterized for a single operating condition, revealing the presence of a stable air core that flows axially faster than the surrounding water.
Handle: http://hdl.handle.net/11368/2894121
Digital Object Identifier (DOI): http://dx.doi.org/10.1615/InterJFluidMechRes.2017016140
URL: http://www.dl.begellhouse.com/journals/71cb29ca5b40f8f8,340d13576272503a,5d3ac9491c889678.html
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